Madhav ‘Maddy’ Kabra (Imran Khan) is an architect who falls in love with Payal (Kangana Ranaut) during college. After college they begin a live-in relationship for 5 years until suddenly Payal leaves Maddy. While all his friends tell him to forget about Payal, Maddy crazily tries to find Payal and win her back, during which the story flashes back to what happened during their 5-year relationship. Finally Maddy finds out that Payal is dying of cancer. Maddy and Payal patch up and live happily for 4 months until Payal dies in Maddy’s arms, making him promise that he’ll always keep this love alive in his heart and love again.